铁道标准设计2017，Vol.61Issue(12)：14-19,6.DOI:10.13238/j.issn.1004-2954.2017.12.004
活动断裂带地区地铁新型轨道结构动力响应研究
Research on Dynamic Response of Metro Track Structure in Active Fault zone
摘要
Abstract
The fault zone is a kind of regional geological hazard,and the fault stick-slip is the main factor that causes serious damage to the crossing-fault tunnel structures during earthquake.The third fault of Jiujiawan fault group meets the Metro Line 1 at the angle of 71 degrees with triaxial deformation,and the expected maximum vertical dislocation is about 650 mm in 100 years.At present,the maximum height adjustment of ballastless track is less than 60 mm with limited height and level adjustment to accommodate the large deformation of active fault of Line 1.In this paper,the new track structure of Urumqi Metro is studied and a train-railway track-tunnel model is established with the finite element software ABAQUS to analyze the dynamic response of the metro track structur.Based on the simulation results,solidified ballast track elastic modulus value of 500 MPa is recommended to guarantee train operation and riding comfort of Line 1.关键词
活动断裂带/无砟轨道/耦合动力学/轨道不平顺/聚氨酯/地铁Key words
Active fault zone/Ballastless track/Coupling dynamics/Track irregularity/Polyurethane/Metro分类
交通工程引用本文复制引用
蔡向辉,于鹏,周红丽,李永明,刘超..活动断裂带地区地铁新型轨道结构动力响应研究[J].铁道标准设计,2017,61(12):14-19,6.基金项目
新疆维吾尔自治区软科学研究计划(K52015042) （K52015042）
